Specifications

1323
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(27)S3
Workaround: There is no workaround.
• CSCef41460
Symptoms: GRE tunnel may not work on a PE router if VPN is configured.
Conditions: This symptom is observed on a Cisco 12000 series that runs the gsr-p-mz image of
Cisco IOS Release 12.0(25)S or a later release.
Workaround: There is no workaround
• CSCef42706
Symptoms: CPUHOG conditions, BGP sessions flaps, and APS channels flaps are observed on a
router.
Conditions: These symptoms are observed when SNMP is polled on a Cisco 12000 series that has
about 500 interfaces and subinterfaces and more than 900 attached service policies. The router may
produce CPUHOG log messages when the CISCO-CLASS-BASED-QOS-MIB stats are polled.
Workaround: There is no workaround.
• CSCef42815
Symptoms: A flap of the BGP session between a primary provider edge (PE) router and a customer
edge (CE) router that provides the default route may cause a remote CE router to lose Internet
connectivity when the BGP session is restored.
Conditions: This symptom is observed in a topology with CE routers that are dual-homed and
connected to two Cisco 12000 series routers that function as PE routers and that run Cisco IOS
Release 12.0(26)S2 when the default route is generated by a CE router in a different VPN
routing/forwarding (VRF).
Workaround: There are two steps to the workaround:
1. Add a default VRF static route to cover the BGP-derived default route.
2. Clear the default route entry in the routing table.
• CSCef42849
Symptoms: Timing violation occurs in the PRE2/PRE1 temperature sensor routine. Since the
temperature sensor routines violate timing requirements, the temperature reading fails in new device
from a new vendor.
Conditions: The failure occurs only in new temperature sensor from new vendor. All old type of
sensors are not effected.
Workaround: There is no workaround.
• CSCef44154
Symptoms: When an MPLS packet that enters through an SRP or Ethernet interface contains an
L2TP or UTI packet and this MPLS packet is processed by the RP instead of the PXF engine (for
example, when the IP header in the MPLS packet contain options and the MPLS TTL equals 0 or 1),
the SRP or Ethernet interface stops receiving packets.
Conditions: This symptom is observed on a Cisco 10720 that runs Cisco IOS Release 12.0S.
Workaround: There is no workaround.
• CSCef44274
Symptoms: The per-WRED-class drop counters are not incremented under “show queueing” output
even though the aggregate WRED drops are non-zero.
Conditions: Problem is specific to legacy random-detect command enabled under the main interface.